Operating procedures – Motorola HC12 User Manual
Page 226
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User’s Manual
MCUez HC12 Assembler
226
Operating Procedures
MOTOROLA
Operating Procedures
Example:
XDEF ResetFunc
DataSec: SECTION
Data:DS.W 5
;Each interrupt increments an element of table
CodeSec: SECTION
; Implementation of the interrupt functions
IRQFunc:
LDAB #0
BRA int
XIRQFunc:
LDAB #2
BRA int
SWIFunc:
LDAB #4
BRA int
OpCodeFunc:
LDAB #6
BRA int
ResetFunc:
LDAB #8
BRA entry
DummyFunc:
RTI
int:
LDX #Data
ABX
INC 0, X
RTI
entry:
LDS #$AFE
loop:BRA loop
VectorTable:SECTION
; Definition of the vector table
IRQInt:
DC.W IRQFunc
XIRQInt:
DC.W XIRQFunc
SWIInt:
DC.W SWIFunc
OpCodeInt:
DC.W OpCodeFunc
COPResetInt:
DC.W DummyFunc; No function attached to COP Reset
ClMonResInt:
DC.W DummyFunc; No function attached to Clock
; MonitorReset
ResetInt : DC.W ResetFunc
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